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Displaying Episode 49 - 72 of 420 in total
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#372
So far in this series we have been adding all of our routes to the routes.swift file. You can see that this would get unwieldy over time. In this episode we will use RouteCollections to build controllers so that we can organize the routes around the Projects resource. We’ll conform our Project type to the Parameter protocol to make loading models from a route parameter extremely simple, and we will leverage the Content protocol to have the results serialized to JSON automatically.
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#371
When you have a many-to-many relationship you typically rely on a join table, or what Vapor calls a Pivot table to relate the records together. In this episode we will create a relationship to allow an issue to have many tags, and also allow a tag to apply to many issues. We'll see how we can use Vapor's ModifiablePivot and Sibling types to make working with these relationships easier.
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#370
We continue our mini-project to create a Swift script that automatically creates migrations for Vapor projects. In this episode we save the generated templates to disk, render a generated extension so that we can add these migration types to the Vapor service, and see the example running end-to-end.
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#369
Our Project and Issue models currently aren't connected in any way. In this episode we will add a foreign key to the projects table and add the parent/child relationships the models so that we can query for issues belonging to a project.
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#368
Usually I lean on Ruby or Bash for writing command line scripts, but it is becoming increasingly more viable to use Swift for this as well. In the Vapor series, I wanted to write a little script (in Swift) that would generate migration files for me so I wouldn’t have to maintain this myself. For this, I used the Marathon tool, which helps alleviate some of the machinery necessary to use Swift in this way. And what better way to explore this tool than with this author guiding me along. John Sundell joins me in this episode to use Marathon and Swift to write a useful script for Vapor applications. This is a longer episode, so it is split into two parts. Enjoy!
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#367
Working with dates is a task that is universally applicable to Swift developers. Particularly when dealing with an API, dates can arrive in all shapes and sizes. We‘ll examine some of the common ones such as ISO 8601, show how to parse these formats into Date instances, and how to use DateFormatter to display them back again as a string. We‘ll also cover the importance of using en_US_POSIX and honoring the user‘s Locale when displaying dates.
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#366
Sometimes when using a functional style to iterate and transform data we can inadvertently make the performance and memory usage much worse. In this episode we will see how we can take a standard procedural iteration, convert it to a functional style, and then utilize lazy to avoid some of the pitfalls that we sometimes run into.
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#365
In the last 2 episodes we added some behavior to add automatically managed timestamp fields and some fairly complex logic to set up UUID primary keys the way we want. Now if we want to share those, or make them the default for our models, we currently have to copy & paste. In this episode we will refactor this logic into reusable protocols so that our work can be applied on any model we wish easily.
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#364
If you want to track when records are created and modified, you can add some fields to your model and Fluent will automatically manage them for you. You just have to take care to define your TimestampKey properties carefully so they match what Fluent expects.
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#363
In this episode we look at customizing the table and columns that Fluent creates for us. In addition to customizing our column data types, we'll also have to lean on an extension of Postgres to generate UUID values for us. We'll see how to customize some of the column constraints to suit our needs, and then create a development route to test it all out.
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#362
In this episode we set up a new Vapor application to use Postgresql as the database. We'll see how to configure FluentPostgreSQL, how to create and set up a connection to the database, and look at the defaults for PostgresSQLModel. We'll also discuss the pros and cons of using UUID primary keys over auto-incrementing integers.
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#361
We continue building out our little promise library, this time adding an ensure method, refactoring how we call the callback blocks, and fix a race condition issue by triggering callbacks even if the value has already been provided.
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#360
Promises are a useful way of turning async code and writing it as if it were synchronous. In this episode we'll create a promise library from scratch so we can see how they work under the hood.
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#359
In this episode we take a deeper look at one of the fundamental building blocks that support Vapor's asynchronous programming model: Futures. Understanding Futures is really important to understand when writing Vapor applications.
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#358
Now that we have Fluent set up, let’s see how we can use it to add, update, and delete records to the database. We’ll get a taste for how futures work in Vapor, and we will also see some of the builtin features that Vapor has to make loading records from your routes really simple.
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#357
Most server applications will need to store some data in a database. For Vapor applications, this is done with Fluent, a Swift Object-Relational-Mapper for persisting objects to a database. Fluent supports SQLite, Postgres, and Mysql. In this episode we will learn how to set up Fluent with a SQLite database for development. We'll create our first model object, and discuss how Fluent supports migrations for evolving the database schema over time.
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#356
In this episode we configure our iOS app to receive push notifications, adding the OneSignal SDK to our project, configuring the Notification Service extension, and testing it out on a real device.
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#355
In this episode we look at how to generate a certification for adding push notification support for your app, using OneSignal as our push notification provider
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#354
Let's take what we have learned and build a simple web app. We'll leverage NSLinguisticTagger on the server and built a small UI that extracts names from provided text. We'll lean on everything we have used so far in this series: routes, templates, master templates, context data, and a little CSS to make the UI look nice.
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#353
With special guest Yono, we dive into the system for text-to-speech and speech recognition on iOS. Yono builds an app for language practice. Along the way we become familiar with AVAudioEngine, AVSpeechSynthesizer, and SFSpeechRecognizer from the Speech Framework.
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#352
When working with web pages, you will almost certainly want to share a considerable amount of HTML. By nesting templates inside of master templates, we can share common HTML structure, layout, and share styles and scripts. We will see how to define sections that can be customized inside of your templates, as well as how to extract common components into partials that you can embed inside of other templates.
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#351
Leaf is Vapor's component for rendering dynamic templates. Rather than writing HTML strings by hand in our router, we can write leaf templates that allow us to mix HTML with code. Since Leaf is a separate package, we will show how to integrate this into your project from scratch, to get an overview of how dependencies are assembled in a Vapor project.
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#350
Vapor uses a router to determine how to process incoming requests. In this episode, we will see how to define routes and how to return simple responses. We will see how to return custom JSON responses, how to accept JSON posts, and how to deal with requests with dynamic parameters.
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#349
In this episode we'll learn how to install the vapor tools, how to create new projects, and look at how projects are structured.